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通过多年的引种试验,提出了引种栽培郁金香的必要条件;通过引种地与原产地自然生态环境条件的对比提出了大别山区建立种球繁育基地的可能性,总结了大别山区引种栽植郁金香的生长发育规律。 相似文献
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郁金香是荷兰国花,世界名花。其叶秀丽素雅,花茎刚劲挺拔,花似高盏酒杯,绚丽多彩。如大面积栽植,远望犹如彩带飘逸,景色壮观,令人神往;若单株栽培,姿态优雅,婷婷玉立,使人赏心悦目,被誉为“花中皇后”。 南宁市人民 相似文献
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郁金香属百合科郁金香属(Tulipagesneriana)多年生鳞茎草本植物。目前,我国很多地区进行了引种栽培,我们于1994年秋在沈阳市苏家屯区引种了荷兰原种郁金香,露地栽培取得了成功。通过郁金香的栽培试验,总结出要想栽培好郁金香除了掌握正确的栽... 相似文献
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马挂木(Liriodendron chinesis)是我国亚热带地区重要的造林绿化树种之一,过去对该树种的研究甚少。根据笔者的调查试验资料及各地报告的汇集,本文从营林角度对马褂木的地理分布、生长习性、生态要求和造林等进行综合介绍,目的为深化马褂木的阐述并开拓今后的研究思路。 相似文献
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Ariel E. Lugo Oscar J. Abelleira Alexander Collado Christian A. Viera Cynthia Santiago Diego O. V��lez Emilio Soto Giovanni Amaro Graciela Char��n H��ctor Col��n Jr. Jennifer Santana Jos�� L. Morales Katherine Rivera Luis Ortiz Luis Rivera Mianel Maldonado Natalia Rivera Norelis J. V��zquez 《New Forests》2011,42(3):267-283
The African tulip tree, Spathodea campanulata, the most common tree in Puerto Rico, forms novel forest types with mixtures of native and other introduced tree species. Novel forests increase in area in response to human activity and there is no information about their biomass accumulation and nutrient cycling. We established allometric relationships and chemically analyzed plant parts of African tulip trees to determine the concentration and standing stock of chemical elements (C, N, P, K, Ca, Mg, S, Mn, Al, Fe, Na), and ash. Trees ranged in diameter at breast height from 8 to 85 cm and in height from 8.8 to 28 m. The concentrations of N, P, K, and Ca in leaves of the African tulip tree were similar to those of the native pioneer Cecropia schreberiana and higher than those of mature forest tree species in Puerto Rico. The over bark wood volume of African tulip trees in nine forest stands where it was dominant ranged from 163 to 849 m3/ha. Aboveground biomass ranged from 60 to 296 Mg/ha, and N and P stocks ranged from 190 to 988 and 32 to 137 kg/ha, respectively. Novel forests on abandoned agricultural lands can store more biomass and elements than native and plantation forest stands of similar age. 相似文献
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目前我国引种的郁金香经第一代种植后 ,第二代种球由于普遍退化而未充分加以利用。通过栽培和应用 ,发现第二代郁金香在湖北荆州可露地栽培 ,且在园林美化及花卉装饰方面有一定的利用价值 相似文献
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杂种马褂木杂种优势的遗传分析 总被引:17,自引:1,他引:17
在叶培忠先生的鹅掌楸属种间杂交育种研究基础上按遗传设计与环境设计开展了扩大北美鹅掌楸遗传基础条件下的正反交以及前人从未做过的回交和F1 间杂交 ,并进行了杂种马褂木杂种优势的遗传分析。结果表明 :(1)正反交F1 、BC1 和F2 4种交配系统杂种的 1a生幼苗普遍存在显著正向生长杂种优势 ;幼苗生长性状在家系间存在极显著差异而在家系内具有很大变异性 ;回交家系表现特别优良 ,因而家系选择、单株选择以及BC1 和F2 利用潜力很大。 (2 )初步提出“光合优势假说”(Photosyntheticsuperiorityhypothesis)作为杂种马褂木和其它杂种树木杂种优势机理的理论解释。 (3)简单估算了一些重要遗传参数 相似文献
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This study examines the ecological niche of American chestnut (Castanea dentata (Marsh.) Borkh) and the latest blight resistant American chestnut?×?Chinese chestnut (Castanea mollissima Blume) hybrids. Planted seedlings of chestnut, tulip poplar (Liriodendron tulipifera L.) and chestnut oak (Quercus prinus L.) were subjected to two levels of light and two soil types in parallel field and greenhouse studies. The field study took place in the Appalachian ridge and valley province of Virginia. Growth and survival were quantified after three growing seasons. The interaction between light levels and topographic position (soil type) was significant for growth rates in the field and greenhouse. Species were significantly different from each other although hybrid varieties were not significantly different from each other or from pure American chestnut. Tulip poplar showed the greatest growth rates under all treatments in the field. Both tulip poplar and chestnut had the greatest growth rates in large gaps within mesic, mid and lower slope (MML) sites in the field. In contrast to growth, optimal conditions for survival differed among species. Tulip poplar had the greatest survival (71%) within large gaps in MML sites while chestnuts and oaks had the greatest overall survival (64%) in small gaps within xeric, upper slope and ridge (XUR) sites. In the greenhouse, tulip poplar did not outperform chestnut. Discrepancies in field and greenhouse studies were accounted for by uncontrolled factors, such as rodent predation. We conclude that optimal sites for planting American chestnut hybrids are in small gaps located within XUR sites. 相似文献
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对中国马褂木、北美鹅掌楸及其种间杂种F113个花果数量性状的研究结果表明:花被片长度(LP)等9个性状在类群间差异达显著或极显著程度,可用于类群识别;花药长度(LA)等11个性状在类群内个体间差异达极显著程度,说明类群内遗传多样性水平较高;杂种F1在雄蕊数(NS)等8个性状上,中国马褂木均表现出较强的遗传优势,花被片宽度(WP)等4个性状表现为偏父遗传或偏父超亲遗传;从性状间的相关性来看,聚合果气干质量主要由果宽决定,大花个体其雌蕊数较少但果实较大。采用聚类分析和主成分分析能有效地对3个类群进行识别。 相似文献
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研究了不同浓度GA3和PEG处理对3个杂交组合郁金香种子发芽率、发芽势的影响以及不同采收时期对3个杂交组合郁金香种子萌发的影响。结果表明:GA3处理种子可显著提高种子的发芽率和发芽势,可使发芽率提高7.41%~25.19%,发芽势提高9.63%~25.92%,PEG处理也能提高种子的发芽率和发芽势,发芽率提高幅度为4.44%~19.26%,发芽势提高幅度为3.7%~19.25%;同种处理下授粉后55d采收的3个杂交组合的种子的发芽率分别高达:90.37%、81.48%和77.04%,发芽势分别高达到:85.15%、77.04%和72.59%,为种子的最佳采收时期。 相似文献
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通过对引进郁金香4系列(DH、TR、SL、DE)、早中晚3类花期、16个品种的生育期性状和植物学性状综合比较,采用国际层次分析法,以萌芽率高于90%以上、观赏期达到20d以上、营养生长期在50d以下、株高在30~45cm、花朵高出叶尖8cm以下或低于或与叶尖平齐等性状进行评价筛选,适宜温室促成栽培的盆栽郁金香品种6个,DH系:中花类、单瓣品种Golden Apeldorn、Ollioules、Ad Rem;TR系:中花类、单瓣品种Washington、Leen v/d Mark;DE系:早花类、重瓣品种Monte Carlo。 相似文献